[Jenkins] auto-formatting by clang-format version 6.0.0-1ubuntu2~16.04.1 (tags/RELEASE_600/final)

Author: stan-buildbot

stan/math/rev/fun/tan.hpp

@@ -57,11 +57,11 @@ inline var tan(const var& a) {
  */
 template <typename VarMat, require_var_matrix_t<VarMat>* = nullptr>
 inline auto tan(const VarMat& a) {
-  return make_callback_var(
-    a.val().array().tan().matrix(), [a](const auto& vi) mutable {
-      a.adj() += vi.adj().cwiseProduct(
-        (1.0 + vi.val().array().square()).matrix());
-    });
+  return make_callback_var(a.val().array().tan().matrix(),
+                           [a](const auto& vi) mutable {
+                             a.adj() += vi.adj().cwiseProduct(
+                                 (1.0 + vi.val().array().square()).matrix());
+                           });
 }
 
 /**